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libc: fix build issue with posix fs APIs on xtensa

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On xtensa we always need to implement the reentrant fs syscall
functions.  So remove the #ifndef CONFIG_POSIX_API protection around
them and add needed externs.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2020-02-04 08:52:13 -06:00 • committed by Johan Hedberg
commit c8696293a9
1 changed files with 5 additions and 2 deletions
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7
lib/libc/newlib/libc-hooks.c
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@ -272,10 +272,14 @@ __weak int *__errno(void)
}
#if CONFIG_XTENSA
extern int _read(int fd, char *buf, int nbytes);
extern int _open(const char *name, int mode);
extern int _close(int file);
extern int _lseek(int file, int ptr, int dir);
/* The Newlib in xtensa toolchain has a few missing functions for the
* reentrant versions of the syscalls.
*/
#ifndef CONFIG_POSIX_API
_ssize_t _read_r(struct _reent *r, int fd, void *buf, size_t nbytes)
{
ARG_UNUSED(r);
@ -311,7 +315,6 @@ _off_t _lseek_r(struct _reent *r, int file, _off_t ptr, int dir)
return _lseek(file, ptr, dir);
}
#endif
int _isatty_r(struct _reent *r, int file)
{